How to Configure Nginx Server Blocks (Virtual Hosts) on RHEL 7 Nginx server blocks — the equivalent of Apache virtual hosts — allow a single Nginx instance to serve multiple websites on the same server by routing requests based on the domain name or IP address. This is one of the most common Nginx configurations […]
How to Install Apache HTTP Server on RHEL 7 Apache HTTP Server is one of the most widely deployed web servers in the world, powering millions of websites and applications. On Red Hat Enterprise Linux 7, Apache (referred to in the package system as httpd) is available directly from the default RHEL repositories, making installation […]
How to Install Nginx on RHEL 7 Nginx is a high-performance, open-source web server and reverse proxy known for its speed, stability, and low memory footprint. On Red Hat Enterprise Linux 7, Nginx is not available in the default repositories, so you must either enable the EPEL (Extra Packages for Enterprise Linux) repository or configure […]
How to Configure Network Interface Settings with nmcli on RHEL 7 Network configuration on RHEL 7 is managed by the NetworkManager service, and the primary command-line interface for NetworkManager is nmcli. Unlike directly editing /etc/sysconfig/network-scripts/ files — which still works but is error-prone — nmcli provides a structured, validated way to create, modify, and activate […]
How to Manage System Packages with yum on RHEL 7 Package management is one of the most fundamental skills for a RHEL 7 system administrator. The Yellowdog Updater Modified (yum) is the default package manager on RHEL 7, and it handles everything from installing and removing software to managing repositories, grouping related packages, and maintaining […]
How to Perform a System Security Audit with auditd on RHEL 7 Security auditing is a critical practice for any production RHEL 7 system, especially those subject to compliance frameworks such as PCI-DSS, HIPAA, or DISA STIG. The Linux Audit Framework, centered on the auditd daemon, provides kernel-level monitoring of system calls, file access, user […]
How to Install and Configure vim and nano on RHEL 7 Every Linux system administrator spends a significant portion of their time editing configuration files, scripts, and documentation directly on the server. RHEL 7 includes the minimal vi editor by default, but the full-featured vim and the beginner-friendly nano are far more practical for daily […]
How to Use journalctl for Systemd Log Analysis on RHEL 7 On RHEL 7, the traditional syslog infrastructure is complemented — and in many cases replaced — by the systemd journal, managed by systemd-journald. The journalctl command is your primary interface for querying, filtering, and exporting log data collected by this service. Unlike flat text […]
How to Monitor Disk Usage with df, du, lsblk and ncdu on RHEL 7 Running out of disk space is one of the most disruptive events in a production Linux environment — it can crash databases, halt web servers, and fill system logs with errors. Proactive disk usage monitoring is therefore a non-negotiable part of […]
How to Schedule Automated Tasks with cron and anacron on RHEL 7 Automation is at the heart of effective Linux system administration. Red Hat Enterprise Linux 7 provides two complementary scheduling systems: cron for tasks that need to run at precise times on continuously running servers, and anacron for tasks that must eventually run on […]
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